如何在TornadoFx中给BarChart条上色？

val data = listOf(
    XYChart.Data("A", 10),
    XYChart.Data("B", 20),
    XYChart.Data("C", 15)
)
val series = XYChart.Series<String, Number>()
series.data.addAll(data)
val chart = barchart("Bar Chart", CategoryAxis(), NumberAxis()) {
    series(series)
}

.chart-bar {
    -fx-bar-fill: #FF0000; /* 设置条形的颜色为红色 */
}

chart.stylesheets.add("path/to/your/style.css")